Power-transmitting mechanism



Dec. 11 1923. 1,476,766

G. S. REYNOLDS v POWER TRANSMITTING MECHANISM Fild Aug. 10. 1922 1 2Sheets-Sheet 1 1 FIG. 2

XIVENTOR ATTORNEY Dec. 11, 1923. 6 1,476,766

G. S. REYNOLDS POWER TRANSMITTING MECHANISM Filed Aug. 10 1-922 2Sheets-Sheet 2 FIG. 4 FIB- I %md2/E T6R, I

ATTORNEY ing material Patented fies. 11, i223.

GRATTON S. REYNOLDS, OF TARENTUM, PENNSYLVANIA.

POWER-TRANSMITTING MECHANISM.

Application filed August '10, 1922. Serial'Np. 580,998. 2

To all whom 2'25 may concern:

Be it'known that I, GnAT'roN S. REYN- onns, a citizen of the UnitedStates, residing at Tarentum, in the county of Allegheny and State ofPennsylvania, have invented a certain new and useful Improvement inPower-Transmitting Mechanism, of which the following'is a specification.

This invention is for a power transmitting mechanism, and relates to adevice for imparting an intermittent movement to a driven shaft from adriving shaft. 7

Devices ofthis kind are adapted for a wide range of machines,particularly those machines having a feeding mechanism associatedtherewith, where the feeding device is driven from the machine, and thedevice is used in transferring proper motion to the feeding devicefronithe machine. An example, for instance, is a crushing mill having anautomatic conveyor for supplythereto in proper amount relatively to thecapacity of the crusher, the in vention being utilized to give thedesired ratio of movement between a driven shaft and a driving shaft forthe conveyor. The primary object of my invention is to provide anintermittent feed of this kind of extremely simple construction, whichis positive in its operation and which is strong and durable. Otherimportant objects are to provide means for regulating or varying thedistance the driven shaft is rotated and for providing a safety deviceincluding-a yieldable'means for preventing damage to parts in the eventof the driven shaft be coming jammed, for any reason.

The'invention may be readily understood by reference to the accompanyingdrawings, in which:

Fig. l is a side elevation of the device, showing the parts in operatingposition; Fig. 2 is an end View of Fig. l, with part of the device shownin'sectiong Fig. 3 is a detail view'showing a plan view of a crank onthe driving shaft;

Fig. 4 is a view similar to in the parts in inoperative position,

Tig. 5 is an end view of the mechanism, as shown in Fig. 4; and

F igl 6 is a front view of the crank. In the drawings, 5 indicates adriving shaft whichis coupled with any suitable machine, not shown,andwhich, in most incontinuously rotating Fig. 1, showtudinally thereonstances, operates at a relatively high speed. On the end is a crank andcam structure,

6 having a hub 7 on which is formed'a cam 8 and a circular portion 9having a radial arm 10 formed thereon. The arm 10 has a T-slotlltherein, extending from its outer end inwardly toward the center. Ateach side of this slot,

Having its head iii the T-slot, is a bolt 13 which is eccentric to theshaft and which may be moved toward or away from the center in theT-slot. Surrounding the shank of this bolt is a sleeve 14 having a headportion 15 in which are teeth adapted to mesh with teeth 12 on thecrank. This sleeve is held in position by nut 16 and washer 17 on theend of the projecting outer end of the bolt. By means of the toothedhead 15 on sleeve let'cooperating with the teeth"l2, the bolt may beadjustably clamped the desired distance from the center of the shaft'5.

Journalled about the sleeve 14 is the end portion 18 of a connectinglink 19. The connecting link 19 has a removable head 20 secured thereon.Slidable on the link, below the head, is an exteriorly threaded nut 21,and interposedbetween the nut and the head is a compression spring 22.The upper end of the link is slidably retained in a cylinder 23, intothe bottom or outer end of whichis screwed the nut'21, to hold spring 22in place, preferably under some compression. Normally, the head 20 ofthe link abuts against the end of thecylind'er chamber, or an abutmenttherein, as shown in Fig. 2. i V

Extendingupwardly from the other end of The driven shaft is designated26. Keyed thereto is a wheel 27 having an annularly toothed face 28, theteeth of which are pref erably relatively open or far apart and 'havestraight vertical faces on-fone side thereof and inclined faces ontheother, the tops of the teeth preferably being flat. Loose on theshaft26 and slidable longiis a second clutch member or wheel 30 having arelatively long chub 31 and a disk'portio-n 32 having teeth 32 on theface thereofwhich is opposite-wheel 27. These teeth are shaped similarlyto those of wheel 27, and are adapted to cooperate On that face of thedisk which.

therewith.

arecorrug'ations or teeth 12. i

the cylinder is a rod portion 24 having an eye 25 on its upper end.

preferably comprising an integral casting 4L, inwhich position theyremain until the roller 43, which is disposed in space between cani8 anddisk f and against the action of spring isnot toothed is an ear 33 andon the periphery of'the disk is alug A bolt 35 passing through ear 33and lug 3e is also passed through eye on rod 24, whereby the cylinderisconnected with the disk.

Abutting against the end of hub. 31 is av compression spring 36,

held in compression by a collar 37 fixed against longitudinal movementon the shaft. This spring urges the wheel into engagement with wheel 27.Pivoted betweenits ends to a fixed bracket by means of bolt. 4L0 passingthrough'it, is a lever 11 having a feather or separable collar v42, atits upper end engaging an amin lar groove inthe hub 31 of'wheel 30. The

lower end of the lever is provided with a suitable cam engaging means,such as a the annular 9 of member 6.

In operation, shaft 5 is continuously rotated. Due to the crank pinprovided by the'bolt and sleeve construction-being eccena tric, areciprocable movement is imparted to link 19. This movement istransmitted when the link 19 moves downwardly through spring 22 tocylinder 23. the spring being suiiiciently stiff to resist yieldingunder normal conditions. Upward movement of link 19 raises cylinder 23by reason of the head abutting against the end wall of the cylinde r.

as rod 24 is pulled dow nwardly, wheel 30 rotates w heel 24 in acorresponding direction.

Just after the crank pin reaches its'lowermost position, cam '8,engaging roller 43,

rocks the lever on its pivot 41 in a direction to, withdraw wheelthrough feather 49..

from operative engagement with wheel 27 parts are then in the positionshown in Fig,

crank pin begins its .ne-Xt'dow-nward arc of movement. Thus, while shaft5, continuously rotates,

' oscillated, the wheel 27'. and consequently toward or awayfro-mtheshaft- 26, is moved in one direction only, andonly through a cessivemovement. V

By suitable adjustment of the crank pin the center of the shaft, themovement ofthe shaft 26 with each rotation of shaft 5 may be varied. Theteeth 12 on the crank preferably bear a certain known relation to theteeth on the wheels 2-7 The and wheel 30 is continuously limited arc ateach -suc and 30, so that the teeth of these two wheels will always moveinto mesh at the proper time.

If, for any reason,'the resistance offered to the rotation of tel-minedmaximum, the spring LZQ will yield, 'allowinga relative movement betweenlink 19 and cylinder 23. This will allow the shaft .5 to continue torotate without being subjected todamaging strains in the event of theload on shaft .26 becoming too great, or. in the event of shaft 26becoming jammed;

shaft 26 exceeds a prede-.

i in order to providea manual. control,

which will enable shaft driving shaft 26', I provide a hand lever a5pivoted on bolt v4:0 and havingan angular arm 46- thereon in which is alaterally projecting pin 47. WVhen lever. L5 is pulled down, pin tactingwith lever 41 above itspivot point, thereby holding wheel 30 out ofoperative 5 to rotate without V a7 is swung through an arc, conpositionagainst the compression of spring. 7

By referring to Figs. 1 and seen that the sleeve 14: of the crank pinconstruction is of sufficient length to enable end portion 18 of link 19to slide tlierealong' with. the sliding movement of wheel30.

Niththe parts arranged as shown in the drawings, shafts 5 and 26 arerotated in the same direction By reversing the wheels on the shaft 26,that shaft may reverse direction. Various changes may tailedconstruction tion, and within the sCope oflthe appended claims.

What I claim is l v 1. A power transmission device compris= inga drivingshaft, a driven shaft, a pair of wheels on the driven shaft having theirop} posed faces providedwith one of said wheels being and the otherwheel being keyed thereto,

one of. said wheels being reciprocable on the be made in the deandarrangement of; parts within the contemplation of my invenhe driven in aits inter-fitting teeth, free on the shaft shaft into and out ofoperative engagement with theother, means for imparting anoscil V jlatory movement from said driving shaft to said free wheel,; and] meansH means on the driving shaft for effecting the reciprocation of saidreciprocable wheel, whereby said wheels are in operative engage inentduring'a portio io'nly of the oscillatory.

travel of said free wheel. V a p 2. A powerltransmission devicecomprising a driving. shaft, a driven shaft, a clutch on said drivenshaft reciprocable 'longitudi nally of the shaft into and out ofoperative a crank on the driving shaft, means for'connecting the crankand clutch member l position,

for imparting an oscillating movement operated by thereto, means drivenfromv the driving shaft for reciprocating said clutch member whereby itwill be in operative position throughout a portion only of itsoscillatory travel, and adjustable means for varying the oscillatorymovement of said clutch member to vary the rotative movement imparted tothe driven shaft with each cycle of oscillation of the clutch member.

3. A power transmission device including a driving shaft, a drivenshaft, cooperating wheels on said driven shaft, one of which is movablelongitudinally into and out of engagement with the other, one of saidwheels being keyed to the shaft and the other one being free thereon, acrank on the driving shaft, means connecting the crank and the freewheel on the driven shaft, whereby an oscillatory motion is imparted tosaid wheel upon rotation of the driving shaft, a cam on the drivingshaft, a lever reciprocated by the rotation of said cam, and means onsaid lever for efiecting a reciprocable movement of the longitudinalmovable wh el, whereby said wheels are in cooperative relation during aportion only of the oscillatory movement of the free wheel. i

t. A power transmission device including a driving shaft, a drivenshaft, cooperating wheels on said driven shaft, one of which is.

movable longitudinally into and out of engagement with the other, one ofsaid wheels being keyed to the shaft and the other one being freethereon, a crank on the driving shaft, means connecting the crank andthe free wheel on the driven shaft, whereby an oscillatory motion isimparted to said wheel upon rotation of the driving shaft, a cam on thedriving shaft, a lever reciprocated by a driving shaft, a driven shaft,cooperating driven shaft, one of which is wheels on said movablelongitudinally into and out of engagement with the other, one of saidwheels being keyed to the shaft and theother one being free thereon, acrank on the driving shaft, means connecting thecrank and the free wheelon the driven shaft, whereby an oscillatory motion is imparted to saidWheel upon rotation of the driving shaft, a cam wheels out on thedriving shaft, a lever reciprocated by the rotation of said cam, andmeans on said lever for effecting a reciprocable movement of thelongitudinal movable Wheel, whereby said wheels are in cooperativerelation dur-. ing a portion only of the oscillatory movement of thefree Wheel, said connecting means including a yieldable connectionarranged to yield when the wheels are in cooperative relation when thedriven shaft en counters a predetermined maximum resistance againstrotation. i V Intestimony whereof I hereunto afiix my signature.

GRATTON S. REYNOLDS,

